繁荣·隐忧·对策——对当下少儿读物出版的现状分析

少儿出版物作为我国出版物的一个种类,一直以来受到人们的广泛关注。少儿出版物的好坏直接关系到少年儿童的健康成长。近年来,我国虽然出版了许多颇具思想性、知识性、文学性、趣味性的少儿读物,但不可否认的是还存在着诸如内容低俗、质量低劣、价格虚高等现象,一些含有淫秽色情和凶杀暴力内容的图书也正在大量地充斥着少儿读物市场,严重地毒害着少年儿童的身心,影响着他们的健康成长,我们必须引起高度重视。     

苗族芦笙文化的交流与影响

苗族芦笙在国际、国内文化交流中,展示了苗族文化的神奇和精彩。苗族芦笙文化的交流与影响大致分为四个时期：第一个时期为20世纪初;第二个时期为20世纪50—60年代;第三个时期为20世纪80年代——90年代末;第四个时期为20世纪末——21世纪初。     

大学科技园建设的经验

自1999 年开始进行国家大学科技园的试点工作以来,大学科技园已成为促进科技成果转化、孵化高新技术企业、培养创新创业人才、带动区域经济发展的重要平台和载体.完备的基础设施、专业化的服务机制、丰富的高素质人才、完善的资本运作机制、政府政策法规的支持与引导、大学的办学理念与激励措施、人力资本的制度安排、高效的大学科技园管理体制和运行机制等是国内外大学科技园建设成功的主要因素.研究总结这些经验,对于新形势下促进大学科技园健康持续发展,具有重要的理论和实践意义.     

Experimental study on dispersion coefficient of dredger fill in reclamation region

In order to satisfy the demand of land use, reclamation engineering has been undertaken in coastal cities for a long time. To study the contaminant transport in the reclamation districts, robust and accurate estimation of dispersion coefficient is essential. In this study, the continuous sodium chloride （NaC1） solution with constant concentration was introduced into the column filled with the dredger fill to get the breakthrough curves （BTCs）. Inverse error function method （IEFM） and CXTFIT program were used for estimating dispersion coefficient. Results showed that the difference between the dispersion coefficients estimated by IEFM and CXTFIT program was slight. The main reason was that the BTC was not strictly linear. IEFM performed poorly in the nonlinear area, while the CXTFIT performed well over the entire BTCs. Moreover, the dispersion coefficient of dredger fill was small. The dispersion property of dredger fill would result in the slow migration of contaminants in the dredger fill.     

美国部分请求诉讼理论与实践

司法实践中出现的部分请求诉讼问题不容小觑,但我国对此研究较少。大陆法系德、日等国均在一定程度上承认部分请求。美国法有禁止分割请求原则,这容易让人认为美国不存在部分请求诉讼问题,这其实是观念上的一个误解。为实现个案公平,美国在一些特殊情形下,也承认部分请求。我国可借鉴其部分请求理论与实践,设计实施部分请求的路径,以更大限度地实现个案公平。     

医学微生物学虚拟试验在实验教学中的应用

根据实验教学的特点,用Photoshop等应用软件制作了"革兰染色法观察细菌形态和染色性"和"肠道病原菌的分离鉴定"两个网络虚拟实验。根据实验中学生需着重掌握的操作技术和易出错的操作环节设置障碍;根据学生需掌握的操作技术的重要性评分;设置后台自动记分和反馈意见。将制作的虚拟实验应用于实验课、学生课后复习、实验考核。学生和教师使用后普遍认为该虚拟实验能真实地展现实验的全过程,能帮助操作者记住实验操作的要点,有趣味性。用于实验考核与实际操作考核结果比较无显著差异(P0.05)。因此,医学微生物学虚拟试验软件应用于实验教学取得了较好效果。     

自然地理野外综合实习的改革

自然地理野外实习是高校地理科学专业的主要实践环节之一。传统的野外实习以巩固和验证理论知识为目的,实习过程多是部门自然地理课程分别在不同学期进行课程实习,实习内容侧重部门自然地理学内容,实习中往往忽略了自然地理学的综合性,对学生创新思维和综合分析能力的培养不够。本研究从创新型人才培养入手,从地理科学的综合性和应用性出发,结合自身实践,以华中师范大学自然地理野外实习为例,对传统部门自然地理分阶段的课程实习进行实践评价,对新开展的宜昌地区自然地理野外综合实习进行分析。通过与传统实习方式相比较,对野外综合实习的内容、方法、绩效评价等方面的改革与创新进行评价,探讨高师地理科学专业自然地理实习的发展方向。     

基于两种算法的天然气管网运行优化技术

为了保证管网能够安全、高效、经济地运行,建立了基于两种优选算法的天然气管网优化模型。在对比了现有各种优化算法的基础上,选用改进线性逼近法和序列二次规划法作为天然气管网运行优化研究的算法,分析了两种算法的原理,并以运行能耗最低为目标进行优化计算研究。为了既能满足生产需求,降低算法本身对目标函数和约束条件的依赖性,又能够保证计算效率和稳定性,优选出序列二次规划法,从生产实际出发建立一套通用性较强的天然气管网稳态运行优化模型,也为软件开发提供前期的数据分析。     

Ontology-based interoperability solutions for textile supply chain

Existence of interoperability within the enterprises is essential for textile supply chain to efficiently face the challenges from contemporary competitors,to find new business opportunities and to render better customer service.Exchange of business documents,being semantically consistent,is the way to achieve interoperability.However,heterogeneity of the structures of the enterprises poses challenges for establishing interoperability.Ontology based semantic interoperability framework has now been proven as an effective solution for enterprise interoperability.In this paper,the existing ontology-based interoperability solutions in the context of textile supply chain have been compiled and research gaps have been identified.The ontological methods,such as unified process for ontology（UPON） and methontology have been analyzed,and UPON have been shown as a suitable ontology development method for textile supply chain.     

CFD simulation of micro-particle trapping under water tweezers

In early research, capture and manipulation of particles were mainly achieved by means of light, electricity and plasma in micro-fabficaton and micro-assembly. A new method is proposed using micro-water jet to form water tweezers to capture solid particles and implement position control of micro-particles. This paper analyzes the basic prin- ciple of water tweezers, and the discrete element method and smoothed particle hydrodynamics method are employed to establish a solid-liquid coupling model used in analyzing the trapping mechanism. A flow field model is set up to simulate dynamic characteristic of water tweezers based on computa- tional fluid dynamics （CFD）. Selection of boundary conditions, initial guess, solver control and convergence strategies of the model are discussed. Velocity and pressure of streamline are predicted and discussed under certain input conditions. Simu- lation results demonstrate that it is an efficiently theoretical method to eventually trap solid particles by water tweezers.